New evidence challenges alien theories in U.S. cattle mutilations

New evidence suggests that the mysterious deaths of cattle in the U.S. may not involve aliens, as previously thought. Ranchers have reported cases of cows found mutilated, particularly with missing organs, but without any blood at the scenes. Former rancher Colby Marshall believes a group of humans is responsible, using toxins to incapacitate the animals before removing body parts. He has conducted his own investigation, finding no chemicals in the blood of the cattle he examined. The FBI investigated cattle mutilations from 1974 to 1978 but did not identify any suspects. Marshall's theory points to a coordinated effort by multiple individuals, rather than supernatural involvement.